This is a useful book although it is small. It contains some technical terms for da'wah in English. No doubt all scholars and callers to Islam in English are in much need to something like that to conveys the right message of Islam to all those speak English.
The 40 Hadith of Imam Nawawi is a profound and comprehensive collection, summarizing the teachings of Islam and the character of the Prophet (S). “Everyone who desires and looks forward to the Hereafter must be familiar with these hadith because they cover the most important aspects of the religion and they offer direction to all forms of obedience to Allah. This is clear to anyone who ponders these hadith.” - Al-Nawawi’s introduction to his Forty Hadeeth.
Reveiwers: Muhammad AbdulRaoof
This treatise was prepared by the Agency of Islamic Enlightenment in Hajj. Includes a discussion about those things which nullify a person's Islam as well as common errors made by the commonfolk.
Author: Muhammad ibn Saleh al-Othaimeen
Source: http://www.islamhouse.com/p/1377
A comprehensive explanation and commentary of the first 24 hadith of Imam al-Nawawi's classic compilation, Riyadh al-Saliheen.
Author: Abu Zakaria Al-Nawawi
By Shaykhul-Islaam Ibn Taymiyyah. Actions are distinguished, one from the other, with respect to their excellence in the Sight of Allaah in accordance with the condition of the heart, not by their number or form, but rather due to the strength of the caller, his truthfulness, his sincerity and the extent to which he prefer Allaah over himself…
Author: Sheikh-ul-Islam ibn Taymiyyah
A great book about the Prophet Muhammad (peace be upon him) which shows how his mercy embraces all beings: humans and jinns, believers and disbelievers, friends and enemies, women and girls, orphans, children, weak people, widows, poor people, students of knowledge, prisoners, the sick and animals. Before that, it mentions his lineage, worship, physical description and morals such as: justice, bravery, generosity, humbleness, gentleness, softness, patience and wisdom. It also illustrates how he encourages others to develop their good manners. It also mentions his miracles and the just and honest Jewish and Christian scholars who acknowledge the truthfulness of the Prophet’s message. Finally it mentions his death and his rights over the people of his nation.
Author: Saeed Bin Ali Bin Wahf Al-Qahtani
Translators: Faisal ibn Muhammad Shafeeq